Over the last 20 years, open-source development has become an integral part of the software industry. Against this backdrop, this article seeks to develop a systematic overview of open-source communities and their socio-economic contexts. I begin with a reconstruction of the genesis of open-source software projects and their changing relationships to established information technology companies. This is followed by the identification of four ideal-type variants of current open-source projects that differ significantly in their modes of coordination and the degree of corporate involvement. Further, I examine why open-source projects lost their subversive connotations while, in contrast to former cases of collective invention, remaining viable beyond the initial phase of innovation.

»Instead of tending towards a vast Alexandrian library the world has become a computer, an electronic brain […]. And as our senses have gone outside us, Big Brother goes inside. So, unless aware of this dynamic, we shall at once move into a phase of panic terrors, exactly befitting a small world of tribal drums, total interdependence, and superimposed co-existence. […] In our long striving to recover for the Western world a unity of sensibility and of thought and feeling we have no more been prepared to accept the tribal consequences of such unity than we were ready for the fragmentation of the human psyche by print culture.«